RelaxSan closed-toe medical compression hold up stockings provide firm graduated compression (23-32 mmHg - Class 2), which helps improve blood circulation in the legs. They help prevent thrombosis and embolism, treat mild chronic venous insufficiency, and reduce symptoms of thrombophlebitis and more severe varicose veins. These graduated compression hold ups are very comfortable, long-lasting and opaque thanks to the soft microfiber contained in their fabric. Their hypoallergenic silicone top bands prevent the stockings from rolling up, while the reinforced heels and toes and invisible flat seams guarantee maximum comfort and durability.